Condensed Consolidated Statements of Operations - Unaudited - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
REVENUES	$ 8,588	$ 6,338	$ 23,058	$ 18,440
Type of Revenue [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Costs and expenses:
Manufacturing cost of sales	$ 5,049	$ 3,833	$ 13,970	$ 11,143
Engineering, selling and administrative	2,417	2,028	6,676	6,173
OPERATING INCOME	1,122	477	2,412	1,124
Other Income:
Interest (expense) income, net		(5)	1	1
Other income, net	82	73	352	164
Total Other Income, Net	82	68	353	165
INCOME BEFORE INCOME TAXES	1,204	545	2,765	1,289
Income tax (benefit) expense	(3,326)	67	(3,286)	146
NET INCOME	$ 4,530	$ 478	$ 6,051	$ 1,143
Basic per share information:
Weighted average shares outstanding	4,901,698	4,772,674	4,872,461	4,722,597
Net income	$ 0.92	$ 0.10	$ 1.24	$ 0.24
Diluted per share information:
Weighted average shares outstanding	4,965,808	4,889,550	4,965,989	4,837,785
Net income	$ 0.91	$ 0.10	$ 1.22	$ 0.24